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Nuveen Municipal High Income Opportunity Fund

NMZ
Exchange
NYSE
SEC CIK
0001266585

In the last 90 days, Nuveen Municipal High Income Opportunity Fund insiders filed 3 open-market purchases and 3 sales; 213 institutions reported holding it in 13F filings for Q2 2026, worth $358.6M in total; no superinvestor holds it.

13F holders, Q2 2025

Institutional positions in Nuveen Municipal High Income Opportunity Fund as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
127
−4 vs. Q1 2025
Shares held
17.2M
−90.3K (−0.5%) vs. Q1 2025
Total value
$178.2M
−$10.4M (−5.5%) vs. Q1 2025
New holders
14
47 more added
Sold out
18
26 more reduced

2 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting NMZ on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2025: 127 institutions
Q1 2021: 110 institutionsQ2 2021: 109 institutionsQ3 2021: 115 institutionsQ4 2021: 124 institutionsQ1 2022: 111 institutionsQ2 2022: 119 institutionsQ3 2022: 121 institutionsQ4 2022: 127 institutionsQ1 2023: 122 institutionsQ2 2023: 112 institutionsQ3 2023: 114 institutionsQ4 2023: 133 institutionsQ1 2024: 117 institutionsQ2 2024: 120 institutionsQ3 2024: 123 institutionsQ4 2024: 127 institutionsQ1 2025: 133 institutionsQ2 2025: 127 institutionsQ3 2025: 124 institutionsQ4 2025: 130 institutionsQ1 2026: 138 institutionsQ2 2026: 213 institutions
Value heldQ2 2025: $178.2M
Q1 2021: $121.9MQ2 2021: $139.8MQ3 2021: $144.6MQ4 2021: $155.9MQ1 2022: $135.6MQ2 2022: $126.0MQ3 2022: $110.2MQ4 2022: $126.8MQ1 2023: $148.6MQ2 2023: $142.7MQ3 2023: $126.6MQ4 2023: $152.2MQ1 2024: $165.4MQ2 2024: $169.4MQ3 2024: $186.7MQ4 2024: $180.7MQ1 2025: $188.9MQ2 2025: $178.2MQ3 2025: $184.9MQ4 2025: $193.0MQ1 2026: $209.4MQ2 2026: $358.6M
Institutions holding NMZ and their total value by quarter
QuarterHoldersValue
Q2 2026213$358.6M
Q1 2026138$209.4M
Q4 2025130$193.0M
Q3 2025124$184.9M
Q2 2025127$178.2M
Q1 2025133$188.9M
Q4 2024127$180.7M
Q3 2024123$186.7M
Q2 2024120$169.4M
Q1 2024117$165.4M
Q4 2023133$152.2M
Q3 2023114$126.6M
Q2 2023112$142.7M
Q1 2023122$148.6M
Q4 2022127$126.8M
Q3 2022121$110.2M
Q2 2022119$126.0M
Q1 2022111$135.6M
Q4 2021124$155.9M
Q3 2021115$144.6M
Q2 2021109$139.8M
Q1 2021110$121.9M

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Nuveen Municipal High Income Opportunity Fund; share changes are against Q1 2025.

Institutions holding NMZ in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Key Financial Inc11$1140.00%00.0%Unchanged
Tower Research Capital LLC (TRC)19$1970.00%+19New
Global Retirement Partners, LLC329$3.41K0.00%+329New
SRS Capital Advisors, Inc.339$3.52K0.00%00.0%Unchanged
CoreFirst Bank & Trust403$4.18K0.00%+403New
IFP Advisors, Inc700$7.26K0.00%00.0%Unchanged
Manchester Capital Management LLC1,000$10.4K0.00%00.0%Unchanged
Trust Co of Toledo NA1,000$10.4K0.00%+1,000New
Sound Income Strategies, LLC1,062$11.0K0.00%+20+1.9%Added
Private Trust Co NA1,200$12.4K0.00%00.0%Unchanged
Webster Bank, N. A.1,500$15.6K0.00%00.0%Unchanged
Creekmur Asset Management LLC1,833$19.0K0.00%00.0%Unchanged
CWM, LLC1,924$20.0K0.00%00.0%Unchanged
Comerica Bank2,250$23.3K0.00%00.0%Unchanged
CoreCap Advisors, LLC2,750$28.5K0.00%00.0%Unchanged
US Bancorp3,000$31.1K0.00%−1,600−34.8%Reduced
Farther Finance Advisors, LLC3,347$34.7K0.00%00.0%Unchanged
N.E.W. Advisory Services LLC6,000$62.2K0.01%00.0%Unchanged
Beacon Capital Management, LLC6,717$69.7K0.01%00.0%Unchanged
Diversify Wealth Management, LLC10,000$101.0K0.01%00.0%Unchanged
Intellus Advisors LLC10,000$103.7K0.02%00.0%Unchanged
Axxcess Wealth Management, LLC10,000$103.7K0.00%+10,000New
Colonial River Wealth Management, LLC10,000$103.9K0.04%+10,000New
Cito Capital Group, LLC10,000$104.0K0.04%00.0%Unchanged
Snowden Capital Advisors LLC10,291$107.4K0.00%00.0%Unchanged
Sage Capital Management, LLC10,500$108.9K0.05%00.0%Unchanged
Citadel Advisors LLC10,509$109.0K0.00%−5,838−35.7%Reduced
Principle Wealth Partners LLC11,000$114.1K0.01%00.0%Unchanged
MAI Capital Management11,038$114.5K0.00%+6,768+158.5%Added
Hudson Valley Investment Advisors Inc11,500$119.3K0.01%00.0%Unchanged
Eq Wealth Advisors, LLC11,918$123.6K0.08%−13,957−53.9%Reduced
Steward Partners Investment Advisory, LLC11,942$123.8K0.00%−640−5.1%Reduced
Spire Wealth Management11,949$123.9K0.00%+35+0.3%Added
Concurrent Investment Advisors, LLC11,964$124.1K0.00%00.0%Unchanged
Secure Asset Management, LLC12,152$126.0K0.02%+12,152New
Sonora Investment Management Group, LLC12,154$126.0K0.01%00.0%Unchanged
Berkeley Capital Partners, LLC12,173$126.2K0.03%00.0%Unchanged
Sunbelt Securities, Inc.12,061$130.4K0.01%+10,061+503.1%Added
AlphaCore Capital LLC12,834$133.9K0.01%+234+1.9%Added
Dynamic Advisor Solutions LLC13,014$135.0K0.00%+238+1.9%Added
Altus Wealth Group LLC13,080$135.6K0.06%00.0%Unchanged
Merit Financial Group, LLC13,302$137.9K0.00%+13,302New
National Asset Management, Inc.13,785$142.9K0.01%−11,101−44.6%Reduced
Kestra Private Wealth Services, LLC13,873$143.9K0.00%+33+0.2%Added
Tyche Wealth Partners LLC14,349$148.8K0.03%00.0%Unchanged
Pacitti Group Inc.14,376$149.1K0.06%−2,355−14.1%Reduced
D.A. Davidson & Co.15,149$157.1K0.00%00.0%Unchanged
Van Hulzen Asset Management, LLC15,657$162.4K0.01%00.0%Unchanged
Oppenheimer & Co Inc16,053$166.5K0.00%+91+0.6%Added
Mutual Advisors, LLC17,314$171.1K0.00%+365+2.2%Added
Horizon Kinetics Asset Management LLC17,322$179.6K0.00%00.0%Unchanged
KG&L Capital Management,LLC17,400$180.4K0.05%+2,000+13.0%Added
Kercheville Advisors, LLC17,507$181.5K0.06%+23+0.1%Added
Creative Planning17,546$182.0K0.00%00.0%Unchanged
EWG Elevate Inc.17,825$184.8K0.06%00.0%Unchanged
Melfa Wealth Management, LLC19,802$205.3K0.13%−2,514−11.3%Reduced
Plan Group Financial, LLC20,427$211.8K0.07%+20,427New
Duncker Streett & Co Inc22,900$237.5K0.04%+22,900New
Independent Financial Group, LLC23,000$238.5K0.01%−11,000−32.4%Reduced
Fisher Asset Management, LLC23,495$243.6K0.00%+23,495New
Balyasny Asset Management LLC23,829$247.1K0.00%+23,829New
Focus Financial Network, Inc.29,427$307.7K0.01%−24,041−45.0%Reduced
Wedbush Securities Inc30,471$316.0K0.01%+150.0%Added
StoneX Group Inc.30,664$318.0K0.02%+30,664New
Capital Investment Advisors, LLC32,656$338.6K0.01%−600−1.8%Reduced
Janney Montgomery Scott LLC33,453$347.0K0.00%−7,500−18.3%Reduced
Ibex Wealth Advisors33,739$349.9K0.04%00.0%Unchanged
Private Advisor Group, LLC34,324$355.9K0.00%+2,300+7.2%Added
Archetype Wealth Partners34,598$359.0K0.05%00.0%Unchanged
We Are One Seven, LLC38,583$400.1K0.01%+38+0.1%Added
Everstar Asset Management, LLC39,964$414.4K0.25%00.0%Unchanged
Susquehanna International Group, LLP43,296$449.0K0.00%+5,586+14.8%Added
Core Wealth Partners LLC44,460$461.1K0.23%00.0%Unchanged
Transce3nd, LLC46,234$479.4K0.20%+23,832+106.4%Added
Jane Street Group, LLC50,099$519.5K0.00%+37,720+304.7%Added
Insigneo Advisory Services, LLC51,800$537.2K0.05%+3,000+6.1%Added
Summit X, LLC55,195$572.4K0.11%−86,695−61.1%Reduced
LexAurum Advisors, LLC56,561$586.5K0.09%+747+1.3%Added
Wiley Bros.-Aintree Capital, LLC56,706$588.0K0.00%+76+0.1%Added
Platform Technology Partners58,363$605.2K0.16%+58,363New
Cliftonlarsonallen Wealth Advisors, LLC59,911$621.3K0.01%00.0%Unchanged
Invesco Ltd.62,268$645.7K0.00%−1,901−3.0%Reduced
Northwestern Mutual Wealth Management Co69,090$716.5K0.00%+94+0.1%Added
Harbour Investments, Inc.69,678$722.6K0.02%−138−0.2%Reduced
Smith, Moore & Co.69,911$725.0K0.06%+10,240+17.2%Added
Venture Visionary Partners LLC70,095$726.9K0.03%+300.0%Added
WESPAC Advisors, LLC70,274$728.7K0.51%00.0%Unchanged
Ausdal Financial Partners, Inc.70,433$730.4K0.05%+758+1.1%Added
Camelot Portfolios, LLC74,072$768.1K0.46%+103+0.1%Added
Ameriprise Financial Inc77,134$799.9K0.00%+3,612+4.9%Added
GWM Advisors LLC79,456$824.0K0.00%+199+0.3%Added
Wealthspire Advisors, LLC79,500$824.4K0.00%00.0%Unchanged
J.W. Cole Advisors, Inc.81,079$840.8K0.02%−9,062−10.1%Reduced
Envestnet Asset Management Inc81,285$842.9K0.00%−163,155−66.7%Reduced
Traynor Capital Management, Inc.84,719$887.0K0.06%−41,150−32.7%Reduced
Wakefield Asset Management LLLP87,772$910.6K0.25%+2,086+2.4%Added
Cambridge Investment Research Advisors, Inc.90,535$939.0K0.00%−16,759−15.6%Reduced
Mariner, LLC92,160$955.7K0.00%+10,758+13.2%Added
Stephens Inc97,145$1.01M0.01%00.0%Unchanged
Regatta Capital Group, LLC109,768$1.14M0.20%00.0%Unchanged